Date: Sun, 25 Jul 2010 17:40:49 +0000 (UTC) From: Rui Paulo <rpaulo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r210474 - stable/8/sys/net80211 Message-ID: <201007251740.o6PHengU014403@svn.freebsd.org>
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Author: rpaulo Date: Sun Jul 25 17:40:48 2010 New Revision: 210474 URL: http://svn.freebsd.org/changeset/base/210474 Log: MFC r209016, r209022: Some odd APs send beacons on the same TX queue as non-beacons. This breaks 802.11 duplicate detection. Upon looking at the standard, we discover that 802.11-2007 says: "A receiving QoS STA is also required to keep only the most recent cache entry per<Address 2, TID, sequence-number> triple, storing only the most recently received fragment number for that triple. A receiving STA may omit tuples obtained from broadcast/multicast or ATIM frames from the cache." To fix this, we just disable duplicate detection for multicast/broadcast frames. Reviewed by: sam Obtained from: DragonFly Modified: stable/8/sys/net80211/ieee80211_sta.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/net80211/ieee80211_sta.c ============================================================================== --- stable/8/sys/net80211/ieee80211_sta.c Sun Jul 25 17:11:57 2010 (r210473) +++ stable/8/sys/net80211/ieee80211_sta.c Sun Jul 25 17:40:48 2010 (r210474) @@ -585,7 +585,7 @@ sta_input(struct ieee80211_node *ni, str } IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi); ni->ni_noise = nf; - if (HAS_SEQ(type)) { + if (HAS_SEQ(type) && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { uint8_t tid = ieee80211_gettid(wh); if (IEEE80211_QOS_HAS_SEQ(wh) && TID_TO_WME_AC(tid) >= WME_AC_VI)
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